[clang-tools-extra] [clangd] Dont require confirmation for include-cleaner batch-fixes (PR #76826)

[Haojian Wu via cfe-commits]

https://github.com/hokein approved this pull request.

This change makes sense for removing all unused includes (as all these unused includes are visible in the editor). For missing includes, they are less obvious, but it is probably fine.

(I think it would be great to have a way to view all missing includes, VSCode has a feature to preview code action changes, but it seems [broken](https://github.com/clangd/vscode-clangd/issues/376) with clangd.)

https://github.com/llvm/llvm-project/pull/76826